gOS is an freely distributed operating system based off of the Ubuntu distribution and Enlightenment window manager. Most notably, it comes pre-installed on the affordable Everex series of PCs. It is marketed as an alternative O/S that includes a minimal amount of installed desktop software, relying heavily on online web applications like GMail, and Google docs for productivity. gOS does come with open-source pre-installed software packages like GIMP and OpenOffice. gOS can be downloaded for free, and fits compactly on under 2GB of disk space.